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Umbilical cord torsion

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https://www.readbyqxmd.com/read/30146174/pressure-and-flow-in-the-umbilical-cord
#1
D J Wilke, J P Denier, T Y Khong, T W Mattner
A fluid dynamic study of blood flow within the umbilical vessels of the human maternal-fetal circulatory system is considered. It is found that the umbilical coiling index (UCI) is unable to distinguish between cords of significantly varying pressure and flow characteristics, which are typically determined by the vessel curvature, torsion and length. Larger scale geometric non-uniformities superposed over the inherent coiling, including cords exhibiting width and/or local UCI variations as well as loose true knots, typically produce a small effect on the total pressure drop...
August 10, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29780421/umbilical-cord-hematoma-a-case-report-and-review-of-the-literature
#2
REVIEW
Gennaro Scutiero, Bernardi Giulia, Piergiorgio Iannone, Luigi Nappi, Danila Morano, Pantaleo Greco
Objectives: To deepen the knowledge in obstetrics on a very rare pregnancy complication: umbilical cord hematoma. Methods: A review of the case reports described in the last ten years in the literature was conducted in order to evaluate epidemiology, predisposing factors, potential outcomes, prenatal diagnosis, and clinical management. Results: Spontaneous umbilical cord hematoma is a rare complication of pregnancy which represents a serious cause of fetal morbidity and mortality...
2018: Obstetrics and Gynecology International
https://www.readbyqxmd.com/read/29536469/-causes-of-abortion-in-horses-overview-of-the-literature-and-own-evaluations
#3
REVIEW
Ramona Weber, Rainer Hospes, Axel Wehrend
The aim of this study was to summarize the current status of the possible causes, clinical symptoms and pathogenesis of abortion in the mare and to evaluate the frequency of varying causes of abortion in German thoroughbred breeding. An analysis of the literature using electronic libraries, journals and textbooks was performed. In addition, the results of examinations of 123 abortions of thoroughbred breeding in central Germany were evaluated. In the literature, bacterial infections are the most frequently described cause of abortion...
February 2018: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/29325264/-high-risk-factors-analysis-of-stillbirth
#4
Y Xiong, H X Xia, Y S Wang, X L Lin, T T Zhu, Y Zhao, X T Li
Objective: To explore the high risk factors of stillbirth. Methods: 176 cases of stillbirth were collected in the Obstetrics and Gynecology Hospital of Fudan University from January 1(st), 2010 to December 31(st), 2016. All cases were analyzed retrospectively, including general profile, high risk factors of stillbirth in different years and pregnancy periods. Results: (1) The incidence of stillbirth was 0.178%(176/98 785). Stillbirth occured mostly at 28-28(+6) gestational weeks (10.8%,19/176), and the second peak was 29-29(+6) weeks(10...
December 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/28332242/bilateral-oblique-facial-clefts-rudimentary-eyes-and-hydrocephalus-in-an-aborted-equine-foetus
#6
J S Agerholm, H G Pedersen, F J McEvoy, S Heegaard
Knowledge of congenital malformations and their causes in horses is generally sparse. Such conditions require more scientific attention to improve their diagnostics and inform prevention strategies. Here, a unique syndrome of bilateral oblique facial clefts (meloschisis), rudimentary eyes and hydrocephalus is reported in an equine foetus spontaneously aborted at gestation day 224. The cause of abortion was considered to be intrauterine death caused by umbilical cord torsions and subsequent compromised blood flow, but the aetiology of the malformation could not be determined...
August 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/26149153/risk-factors-and-perinatal-outcomes-of-velamentous-umbilical-cord-insertion
#7
Xue-Yan Li, Song Yu, Qing-Qing Wu
OBJECTIVE: To explore the risk factors of velamentous umbilical cord insertion(VCI)and the impact of VCI on perinatal outcomes. METHODS: The clinical data of 588 VCI patients who were treated in Beijing Gynecology and Obstetrics Hospital from January 2006 to January 2011 were retrospectively analyzed. In addition,61,143 non-VCI subjects were enrolled as the control group. The possible risk factors of VCI and the impact of VCI on perinatal outcomes were analyzed...
June 2015: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/25845257/-axial-torsion-and-gangrene-of-meckel-s-diverticulum-case-report
#8
(no author information available yet)
INTRODUCTION: Meckel's diverticulum (MD) is the most prevalent congenital anomaly of small intestine. It develops due to the incomplete obliteration of omphalomesenterict duct which normally undergoes obliteration during the seventh week of gestation. In the majority of cases MD is asymptomatic but it may cause various complications, such as bleeding, intestinal obstruction and inflammation. Cases of umbilical sinuses, fistulas and neoplasms related with MD have been reported, but extremely rare gangrene due to its axial torsion, especially in children, as is the case of our patients...
January 2015: Srpski Arhiv za Celokupno Lekarstvo
https://www.readbyqxmd.com/read/25362497/4-pregnant-women-with-an-unusual-finding-at-delivery
#9
Alexandra R Johnson, Annamarie Meeuwsen, Morteza Khodaee, Mark Deutchman
No abstract text is available yet for this article.
November 2014: Journal of Family Practice
https://www.readbyqxmd.com/read/24842016/-clinicopathologic-features-of-fetal-nuchal-cystic-hygroma-report-of-40-cases
#10
Xiaobo Zhang, Yiqun Gu, Lijuan Lu, Yunfei Sun, Yingnan Wang, Aichun Wang, Junling Xie
OBJECTIVE: To study the pathogenesis, pathologic features and prognosis of fetal nuchal cystic hygroma. METHODS: Forty autopsied cases of fetal nuchal cystic hygroma were collected during January 2003 to December 2012. The clinical history, pathologic changes and immunohistochemical (EnVision method) findings were reviewed, and the pathogenesis and pathologic characteristics were analyzed. RESULTS: Of the 40 cases, 16 (40.0%) showed single malformation and 24 (60...
March 2014: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/24538882/-umbilical-cord-torsion-causing-intrauterine-death-of-fetus
#11
G CORNELIO
No abstract text is available yet for this article.
August 1950: La Clinica Ostetrica e Ginecologica
https://www.readbyqxmd.com/read/24505622/-umbilical-cord-knots-at-monochorionic-twin-pregnancy
#12
T Somville, G Ortmeyer, P Glosemeyer, K Hecher, A Diemert
No abstract text is available yet for this article.
December 2013: Zeitschrift Für Geburtshilfe und Neonatologie
https://www.readbyqxmd.com/read/24332083/the-structural-basis-of-functional-improvement-in-response-to-human-umbilical-cord-blood-stem-cell-transplantation-in-hearts-with-postinfarct-lv-remodeling
#13
Yong Chen, Lei Ye, Jia Zhong, Xin Li, Chen Yan, Margaret P Chandler, Steve Calvin, Feng Xiao, Mesfin Negia, Walter C Low, Jianyi Zhang, Xin Yu
Cellular therapy for myocardial repair has been one of the most intensely investigated interventional strategies for acute myocardial infarction. Although the therapeutic potential of stem cells has been demonstrated in various studies, the underlying mechanisms for such improvements are poorly understood. In the present study, we investigated the long-term effects of stem cell therapy on both myocardial fiber organization and regional contractile function using a rat model of postinfarct remodeling. Human nonhematopoietic umbilical cord blood stem cells (nh-UCBSCs) were administered via tail vein to rats 2 days after infarct surgery...
2015: Cell Transplantation
https://www.readbyqxmd.com/read/24236531/in-vitro-umbilical-cord-wrapping-and-torsion-possible-cause-of-umbilical-blood-flow-occlusion
#14
Robert W Bendon, Shawn P Brown, Michael G Ross
OBJECTIVE: Intrapartum fetal heart rate decelerations and bradycardia are often attributed to umbilical cord occlusion without knowing the anatomic basis of that occlusion. We hypothesized that umbilical cord twisting while looped around fetal parts could occlude blood flow. METHODS: Using an in vitro preparation, human umbilical cord veins were perfused at one end with water at approximately 40 cm H2O. The cords were looped around pipes that approximated the diameter of fetal body or limb parts, after which the perfused segment of cord was twisted until water flow stopped...
September 2014: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/24057797/neonatal-inguinoscrotal-hematocele
#15
E Vlahakis-Miliaras, G Koutsoumis, D Miliaras, S Manios
Neonatal inguinoscrotal lesion, or hematocele of neonates, is attributed to trauma from the plastic clamp used to ligate the umbilical cord immediately after delivery. The pathogenesis is thought to be related to two factors: incorrect clamping technique, in which the clamp is eccentric or too distal, and the infant's position, lying over the clamp. This is a rare event that usually appears on the 2nd day of life, with very few reports recorded in the literature. The lesion does not have any complications, but may be easily confused with testicular torsion...
August 1996: Pediatric Surgery International
https://www.readbyqxmd.com/read/23519854/an-unusual-case-of-intra-abdominal-testicular-torsion-role-of-laparoscopy
#16
Alfonso Papparella, Fabiano Nino, Sandra Coppola, Pio Parmeggiani
The authors report a case of intra-abdominal testicular torsion, where laparoscopy has been useful for diagnosis and surgical management. A boy was presented with a left impalpable testis. Laparoscopy revealed a twisted spermatic cord at the inlet pelvis, which ended in a testicular remnant located in the sub-umbilical area. After orchiectomy, the pathologist confirmed testicular atrophy. Diagnosis of intra-abdominal testicular torsion should be considered in patients with impalpable testis and abdominal pain, but could not be excluded in those with no symptoms...
January 2013: African Journal of Paediatric Surgery: AJPS
https://www.readbyqxmd.com/read/23302333/-relationship-between-placental-pathology-and-small-for-gestational-age-neonates
#17
Xue-jun Zhao, Jin-ping Xu, Bing Li, Jiu-ling Qi, Sheng-min Ping, Hai-yun Zhu, Bo-ning Liu
OBJECTIVE: To investigate the relationship between pathological abnormalities of placenta and small-for-gestational-age neonates. METHODS: One hundred placentas of small-for-gestational-age (SGA group) and 200 appropriate-for-gestational-age (AGA group) with single living birth in third trimester were investigated by gross and microscopic examination. The AGA placentas were collected from 2 cases following every SGA placenta. All cases were collected from Shanghai Changning District Maternity and Infant Health Hospital from January 2010 to December 2011...
November 2012: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/22400796/placental-histologic-criteria-for-diagnosis-of-cord-accident-sensitivity-and-specificity
#18
William D Ryan, Neha Trivedi, Kurt Benirschke, D Yvette Lacoursiere, Mana M Parast
"Cord accident" (compromised umbilical blood flow) as a cause of stillbirth is underreported, mainly due to a lack of diagnostic criteria. Based on fetal vascular pathology in the placenta, we have previously established histologic criteria for the diagnosis of cord accident. In the current study, we set out to test the sensitivity and specificity of these criteria by reviewing an independent set of stillbirth cases. Placental slides from 26 cases (in which cord accident was deemed the cause of death) and 62 controls (in which the cause of death was anything other than cord accident) were reviewed...
July 2012: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/22253125/-surgical-treatment-of-neonates-with-very-low-vlbw-or-extremely-low-elbw-birth-weight
#19
Ewa Sawicka, Klaudia Zak, Maria Boczar, Barbara Płoska-Urbanek, Dariusz Mydlak, Martyna Woynarowska
UNLABELLED: Progress in perinatology and neonatal intensive care led to surgical treatment of premature infants born with low (<1500 g) and extremely low (<1000 g) birth weight. AIM: Evaluation of surgical treatment in the group of neonates with very low birth weight (<1500 g) and extremely low birth weight (<1000 g). MATERIAL AND METHODS: In the years 2000-2009 in the Department of Paediatric Surgery in the Institute of Mother and Child, 617 neonates underwent surgical treatment, 101 of them (16%) were born with very low or extremely low birth weight...
July 2011: Medycyna Wieku Rozwojowego
https://www.readbyqxmd.com/read/20926769/computational-fluid-dynamic-analysis-of-flow-velocity-waveform-notching-in-umbilical-arteries
#20
Andrés E Tejada-Martínez, Christian J Borberg, Resmi Venugopal, Carlos Carballo, Wilfrido A Moreno, Rubén A Quintero
Umbilical artery Doppler velocimetry waveform notching has long been associated with umbilical cord abnormalities, such as distortion, torsion, and/or compression (i.e., constriction). The physical mechanism by which the notching occurs has not been elucidated. Flow velocity waveforms (FVWs) from two-dimensional pulsatile flows in a constricted channel approximating a compressed umbilical cord are analyzed, leading to a clear relationship between the notching and the constriction. Two flows with an asymmetric, semi-elliptical constriction are computed using a stabilized finite-element method...
January 2011: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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